03 / THE ENGINE
Making the Railway
Hold Together.
Working foundations · Separate development trials
A railway needs more than rails on screen. Construction, moving trains, changing ground, water and saved progress all need to agree.
A Connected Railway
Track alignments and connections have their own data. Smooth curves, junctions and ballast are being developed together, so the railway the tools build is the railway the train follows.
Trains That Work Together
The train work combines a rail-guided force model with physical coupling constraints. Development checks exercise pickup, detaching, running round and returning with the same stock.
A World That Can Change
Separate terrain trials combine landscape shaping, local excavation and live surface water. Ground, collision and the river bed need to update together, with Undo and saved progress kept intact.
Progress Worth Keeping
Save work checks that construction, trains, terrain and water return together. Failure and recovery tests matter as much as a successful save.
These are bounded development results. Separate trials do not yet establish a finished combined game, unlimited worlds or performance on every computer.
Read the engine diary